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CBSE Class 12-science Answered

An aq solution containing iquid A(M=128) 64% y weight has V.P 145mm ofhg.If V.P of H20 is 155mm 0f hg then calcluate V .P of A at same temp.
Asked by banga71 | 17 May, 2017, 09:47: PM
answered-by-expert Expert Answer
For space two space miscible space liquids comma straight P subscript total space equals space straight P subscript straight A space plus space straight P subscript straight B space equals space straight P subscript straight A superscript straight omicron space straight X subscript straight A space plus space space straight P subscript straight B superscript straight omicron space straight X subscript straight B straight n subscript straight A space equals space 64 over 128 space equals space 0.5 straight n subscript straight B space equals space 36 over 18 space equals space 2 straight X subscript straight A space equals space fraction numerator straight n subscript straight A over denominator straight n subscript straight A space plus space straight n subscript straight B end fraction space equals space fraction numerator 0.5 over denominator 2.5 end fraction space equals space 0.2 straight X subscript straight B space equals space fraction numerator straight n subscript straight B over denominator straight n subscript straight A space plus space straight n subscript straight B end fraction space equals space fraction numerator 2 over denominator 2.5 end fraction space equals space 0.8 straight P subscript total space equals space straight P subscript straight A space plus space straight P subscript straight B space equals space straight P subscript straight A superscript straight omicron space straight X subscript straight A space plus space space straight P subscript straight B superscript straight omicron space straight X subscript straight B space equals space straight P subscript straight A superscript straight omicron space cross times space 0.2 space plus space 155 space cross times space 0.8 145 space equals space space straight P subscript straight A superscript straight omicron space cross times space 0.2 space plus space 155 space cross times space 0.8 straight P subscript straight A superscript straight omicron space equals space fraction numerator 145 space minus space 124 over denominator 0.2 end fraction space equals space 105 space mm
Answered by Arvind Diwale | 18 May, 2017, 01:47: PM
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CBSE 12-science - Chemistry
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